Self-adjusting rotary brush.



E STROSCHEIN. SELF ADJUSTING ROTARY BRUSH.

APPLICATION man'ngmz. 19w.

Patented J an.

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EDWARD STROSCHEIN, OF OSHKOSH, WISCONSIN.

SELF-ADJUSTING ROTARY BRUSH.

l tltdil Specification of Letters Patent.

Application filed December 12, 1917. Serial No. 206,747.

To all whom it may concern:

Be it known that I, EDWARD STROSCHEIN, a citizen of the United States, and resident of Oshkosh, in the county of Winnebago and State of Wisconsin, have invented certain new and useful Improvements in Self Adjusting Rotary Brushes; and l[ do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates to certain new and useful improvements in carpet sweepers and refers particularly to the manner of journaling the friction pulley and connecting the rotary brush with the friction pulley.

In devices of this character now in vogue, the friction pulley is rigidly connected with the rotary brush and the brush and pulley are both capable of vertical movement, a spring or other means being employed to normally urge the same downwardly, but this method of permitting vertical adjustment of the rotary brush is very objectionable in that the relation of the friction pulley with respect to its drive wheels is continuously changing with every vertical movement of the brush, and hence with this inherent objection in view my invention has for its primary object to provide a carpet sweeper having a permanently journaled friction roller and a self adjusting rotary brush driven thereby. I

A further object of the resent invention is to provide a self adjustmg rotary brush having a detachable universal joint driving connection with its friction pulley and adapted to rest against the floor surface by gravity.

A still further object of the present invention is to provide means for permitting vertical adjustment only of the rotary brush.

With the above and other objects in view which will appear asthe description pro ceeds my invention resides in the novel construction, combination and arrangement of parts sul'istantially as hereinafter described and particularly defined by'the appended claims, it being understood that such changes in the precise embodiment of the herein disclosed invention may be made as come within the scope of the claims.

In the accompanying drawings it have illustrated one complete example of the physical embodiment of my invention constructcd according to the best mode I have partly in elevation the same being taken on the plane indicated by line 2-2 of Fig. 1, and i Fig. 3 is a view part in' section and part in elevation taken on the plane indicated bv line 3-3 of Fig". 2.

Referring now more particularly to the accompanying drawings, in which S represents a combined carpet and wicuumcleaner which may be of any well known make or construction. and each side wall thereof has secured thereto by means of suitable fastenings 1. a plate 2 in which are journaled the usual drive wheels 3 having their peripheries coated.with rubber or other suitable substances, and fixed to the plate 2 by means of its inner flange portion -l is a sleeve 5 upon which is rotatably mounted the .bushing 6 of a friction pulley '7, the usual guard rails 8 being provided to protect the drive wheels and friction pulley.

.The sleeve 5 terminates a little inwardly of the outer end of the bushing (i, which is formed with theinwardly projecting pon tion or enlargcmenti), and extending transversely across the central opening of the sleeve 5 at its outer end is a pin 10 engaging an opening 11 provided in the outer end of a spindle 12 which has its inner end slotted or bifurcated as at 13 and passed into a recess 14: in the end of a rotary brush 15 and detachably engaging a pivot pin 16 passing through the recess M.

"The opening 11 of the spindle 12 has its Fig. 2, whereby a universal joint connection is provided between said spindle and bushing (3. By this method of connecting the brush 15 with friction pulley 7. the brush is capable of vertical adjustment with out changing the relation of the friction pulley with respect to its drive wheel 3. and to prevent lateral movement of the brush 15 the ends thereof are confined between a pair of guide members 17 secured to the inner side of the plates 2 juxtaposedthe opening 18 therein alining with the recess 14 and the bore of sleeve 5. f

From the foregoing description taken in ends curved or flared, as best shown in p have illustrated the same as in use with a combined carpet sweeper and vacuum cleaner, it will be understood that I do not desire to limit the use of my device upon a combined carpet sweeper-and vacuum cleaner, but that the same may be readily used upon any formlof carpet sweeper.

I claim:

I 1. In' a device of the class described, the combination with a drive wheel, of a fric tion pulley rotatably mounted adjacent said drive wheel and adapted to be rotated thereby, a rotary brush, a spindle connecting said friction pulley and rotary brush, said spindle having a universal joint connection with said pulley and a slidable and pivotal connection with said rotary brush, and means for preventing lateral movement of said brush.

2. In a device of the class described, the combination with a drive wheel, of a sleeve secured adjacent said drive wheel, a friction pulley j ournaled upon said sleeve and adapted to be rotated by said drive wheel, a rotary brush having its end recessed in line with the bore of said sleeve, a spindle having one end disposed in the recess of said rotary brush and slidably and pivotally connected therewith, the other end of said spindle being disposed in the bore of said sleeve and connected by a universal joint with said friction pulley, and means engaging the end of said rotary brush whereby to prevent lateral movement thereof substantially as described.

In testimony that I claim the foregoing I have hereunto set my hand at Oshkosh. in

the county of Winnebago and State of VVis consin.

EDWARD STROSHEIN. 

